How to write chord names in Italian

1. Download and save the file "cchords_muse_it.xml" (by sandroden in this article );
2. copy it (or drag it) into the folder: MuseScore/Styles (confirm the authorization, if requested);
   
3. enter chord names as from handbook;
4. From the main menu, choose Style → Edit General Style...;
5. From the left pane, select Chordnames;
6. Navigate to the styles folder if necessary;
7. Select cchords_muse_it.xml;

Done!

Remember that: When properly inserted, the chord names can be transposed